public class ThreadDemo {
    public static void main(String[] args) throws InterruptedException {
        Runnable target = ()->{
            for (int i = 0; i < 3; i++) {
                System.out.println(Thread.currentThread().getName()+":我还在工作");
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    //e.printStackTrace();
                    break;
                }
            }
            System.out.println(Thread.currentThread().getName()+"：我结束了");
        };
        Thread thread1 = new Thread(target,"李四");
        Thread thread2 = new Thread(target,"王五");
        System.out.println("先让李四开始工作");
        thread1.start();
        thread1.join();
        System.out.println("李四工作结束，让王五开始工作");
        thread2.start();
        thread2.join();
        System.out.println("王五工作结束");
    }
}
